/Engine/Plugins/Experimental/ChaosVehiclesPlugin/Source/ChaosVehicles/Public/ChaosVehicleMovementComponent.h
Set the user input for the vehicle Brake [range 0 to 1]
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Game|Components|ChaosVehicleMovement") void SetBrakeInput ( float Brake )